Under assum2, it follows from [1]} that \(\mathbf {x}_i^k\)  of algcon3 converges to \(\bar{\mathbf {x}}\)  at a linear rate \(\mathcal {O}(\frac{1}{\rho }\log \frac{1}{\epsilon })\)Such a rate actually corresponds to a faster version \(X^{k+1}=\frac{1}{2}(I+W)X^k\)  if \(|\lambda _n(W)|>\frac{1}{2}(1+|\lambda _2(W)|)\) . to find an \(\epsilon \) -solution.
